NGC6027 A-E, Seyfert's Sextet, in Serpens (Cauda)

(Click on image for full size version)

Description:

This grouping of six galaxies is extremely
small and faint. See the full size image for a perspective on the
size. The FOV of the full size image is 12 x 18 arc-min. Even
though they are tightly grouped, one of the six has a dramatically different
red shift from the other five. A chance grouping or some other
explanation?